Mixer.



G. S. NOBLE.

MIXER.- APPLICATION FILED AUG. 19, 1907.

Patented Feb. 27, 1912.

fl ihwau V/ZZJIZM'A GLENN S. NOBLE, OF CHICAGO, ILLINOIS.

MIXER.

Specification of Letters Patent.

Application filed August 19, 1907.

Patented Feb. 2'7, 1912.

Serial No. 389,118.

To all whom it may concern:

Be it known that I, GLENN S. NOBLE, a citizen of the United States,residing at Chicago, in the county of Cook and State of Illinois, haveinvented certaln new and useful Improvements in Mixers, of which thefollowing is a specification.

This invention relates more particularly to mixers or mixing machinesadapted to mix various materials, for instance, concrete, mortar or thelike, and it consists in the novel features of construction and improvedparts which will be hereinafter fully described and pointed out. Itsobjects are to improve the general construction and efiiciency of suchmachines.

I have illustrated my invention in the accompanying drawings in which:

Figure l is a front elevation of the mixing machine embodying thisinvention. Fig. 2 is a transverse sectional view of the same. Fig. 3 isanother sectional view showing the method of operation. Fig. 4. is alongitudinal sectional view, and, Fig. 5 is a detail showing a tootheddeflector plate.

As shown in the drawings, 6 represents a mixer drum having asubstantially spiral shape in cross section; that is with an inturnedportion 7 adjacent to the feed and discharge opening 8 and opposed tothe outer lip or surface 9 which forms the other side of the dischargeopening. The drum is provided with heads 10, 10, having trunnions 11mounted in suitable bearings on stands or frame 12. The drum may bedriven in any desired manner as for instance, by gear wheel 13 mountedon one of the trunnions 11 and adapted to be driven from any suitablesource of power, not shown.

The inturned portion of plate 7 is provided on its inner edge with atoothed plate 14 as shown in particular in Fig. 5. This plate ispreferably made with the ends 15, 15 curved upward to engage with theheads of the drum, or substantially as shown in the drawings; and isalso provided with a number of teeth or blades 16, 16, these bladesbeing spaced at equal distances at either side of the center and curvedor twisted in opposite directions so that material falling over the samewill be deflected from the ends toward the center of the drum. Thisplate is preferably made separatefro-m the plate forming the drum, butit is obvious that the same might, in some instances, be made integraltherewith, and it is also obvious that the plate 14 might be made forinstance of two separate pieces, or the curved ends and teeth ordeflectors may all be made of separate pieces.

Another feature of this invention consists in the water tank 17 which issuitably mounted on supports 18 attached to the stands 12. This watertank is also supported on a shaft or trunnions 19 in such a manner thatit will normally stand in upright position as shown in Fig. 2. The tankmay be tipped in any desired manner as for instance, by means of ahandle 20 attached to one of the trunnions 19.

The mixing drum is filled with the material to be mixed, when it is inabout the position shown in Fig. 2. If concrete is to be made, thevarious ingredients may be dumped in in any desired order. The tank 17is filled in any desired manner as by means of a hose from a source ofwater supply, and the water may be accurately measured in said tank.When the water is to be discharged into the drum, all that is necessaryis for the operator to move the handle 20 as indicated in dotted linesin Fig. 2, which will cause the water to be discharged into the opening8 in the drum. The handle is then released and the tank again resumesitsupright position for filling. Then, all of the material being in thedrum, it is turned in the direction indicated by the arrows which willcause the material to be raised and gathered into the pocket or recessformed by the inturned edge 7. The material then falls from this pocketor recess over the toothed plate 14 as indicated in Figs. 3 and 4. Thecurved ends 15 will gather the material from the heads of the drum anddischarge it for a considerable distance toward the center, and at thesame time the teeth 16, raking through the material. will assist inmixing the same, and will also deflect it toward the center, whereby thematerial is given a longitudinal mixing as well as being mixedcircumferentially by rolling around in the drum and falling over theinturned edge. As the material falls through the toothed plate andstrikes against the outer portion of the drum, it will tend to againspread, and will in fact be spread evenly by the continued rotation ofthe drum.

On account of keeping the entire mass in the mixer substantially incontinuous movement and then changing the direction of the movement bymeans of the teeth or deflectors and curved end portions as the masspasses over the inturned edge 7, there is comparatively slight tendencyfor the material to stick orclog in the drum. Furthermore, the Weight ofthe mass of the material pressing against the curved ends and teeth asit passes over the inturned edge tends to keep them clean and tree fromclogging. This constant concentrating vand massing of the material andgiving it a longitudinal movement in the drum causes a thorough andeflicient mixing in a comparatively short time. On account of the novelform of the drum and the arrangement of the deflectors, it is alsoeasily cleaned When the mixing operation is over.

Having thus described my invention, which I do not- Wish to limit to theexact details of construction, What I claim and desire to secure byLetters Patent is:

1. A mixing drum having an inturned portion of the side provided at theinner edge With teeth, said drum being adapted to be rotated to mixmaterial placed therein.

2. The combination With a mixing drum, of a toothed plate mounted insaid drum,

Copies of this patent may be obtained for the teeth of said plate beingbent to deflect the material longitudinally of said drum as it passesover said plate.

3. A mixing drum having heads and overlapping side portions forming alongitudinal opening, the inturned portion of said drum being providedwith means for mixing material passing over said portion and fordeflecting the material longitudinally of the drum.

4. The combination With a mixing drum, of a plate having oppositely bentteeth, and curved ends, said drum being adapted to be rotated to mixmaterial placed therein, for the purpose herein set forth.

5. The combination with a mixing drum having overlapping side portionsforming a longitudinal opening, of curved deflectors at the ends of theinturned portion for cleflecting the material toward the center of thedrum as itpasses over said inturned portion, and teeth between saidcurved deflectors, serving to intermingle .the material passing oversaid inturned portion.

GLENN S. NOBLE.

l/Vitnesses:

CARL H. CRAWFORD, A. D. FANSTEMAKER.

five cents each, by addressing the Commissioner of Patents, Washington,D. G.

